Siemens SINAMICS S150 NEMA, Operating Instructions Manual

Page: 171 / 862

Electrical installation
4.9 Additional connections
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
169
Table 4- 59 Specification of measuring systems that can be connected
Parameter Designation Threshold
4)
Min. Max. Unit
High signal level
(TTL bipolar at X520 or X521/X531)
1)
U
Hdiff
2 5 V
Low signal level
(TTL bipolar to X520 or X521/X531)
1)
U
Ldiff
-5 -2 V
High signal level
(HTL unipolar)
U
H4)
High 17 V
CC
V
Low 10 V
CC
V
Low signal level
(HTL unipolar)
U
L4)
High 0 7 V
Low 0 2 V
High signal level
(HTL bipolar)
2)
U
Hdiff
3 V
CC
V
Low signal level
(HTL bipolar)
2)
U
Ldiff
-V
CC
-3 V
High signal level
(SSI bipolar at X520 or X521/X531)
1)
U
Hdiff
2 5 V
Low signal level
(SSI bipolar at X520 or X521/X531)
1)
U
Ldiff
-5 -2 V
Signal frequency f
S
- 300 kHz
Edge spacing t
min
100 - ns
Zero pulse inactive time
(before and after A=B=high)
t
Lo
640 (t
ALo-BHi
- t
Hi
)/2
3)
ns
Zero pulse active time
(while A=B=high and beyond)
t
Hi
640 t
ALo-BHi
- 2 x t
Lo 3)
ns
1)
Other signal levels according to the RS 422 standard.
2)
The absolute level of the individual signals moves between 0 V and V
CC
of the measuring system.
3)
t
ALo-BHi
is not a specified value, but is the time between the falling edge of track A and the next but one rising edge of
track B.
4)
The threshold can be set via p0405.04 (switching threshold); the setting on delivery is "Low."
Figure 4-43 Signal characteristic of the A and B track between two edges: time between two edges
with pulse encoders